本节给出三个非常实用和高速的内存分配函数。读者可以直接拷贝这三个函数到程序中去，使用Allocate()和My_Free()代替系统提供的alloc()和free()函数。调试环境为TC2.0或者TC3.0-This section gives three very practical and high-speed memory allocation function. The reader can directly copy these three functions to the program, use the Allocate () and My_Free () instead of system provided by alloc () and free () function. TC2.0 or debugging environment TC3.0